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p2p addresses for point-to-point connections with customers

On 11/6/2012 5:44 AM, Tassos Chatzithomaoglou wrote:
> Roland, how do you handle customer requests regarding the remote management of their devices?
> i.e. if the customer wants to do any kind of management (ssh, snmp) from outside his router, he must use our
> infrastructure address (which is configured on his router) as a destination.
> Generally, the customer might want to use this wan address for many other things which you shouldn't actually care,
> since it's his router.

Why would the customer not have a loopback interface configured on his 
router with an accessible IP address? Relying on the WAN address is 
arguably a poor choice for a number of reasons including renumbering 
events and circuit outages.